Putlog



. w O A m Y O 7 win lmm m L N j 1 1 Dec. 7 1926.

Patented Dec. 7, 1926.

cairn srA'res 1,610,013 PATENT orria.

THOMAS H. KINGSTON, OF TE-ET SOIIIEBVILLE,MASSACHU$ETTS.

Application filed February 28, 1925. Serial No. 12,340.

It is a further object of the invention to so construct the said anchor plates that the point of weight or load transmission to the bricks or building elements will be located approximately midway between the outer and inner edges thereof, even though the putlogs may be carelessly placed and assume a tilted position several degrees above or below a level or plane perpendicularto the wall or structure in process of building or repair.

Heretofore, considerable trouble has been caused by the tilting ordisplacement of the bricks upon which the putlog anchor plates rested, due to the fact that the plates were so constructed that unless the putlogs were carefully placed with the lower edges of the plates in full contact with the bricks, the

inding material of which had not fully set, they caused the subsequent transmission of load to those bricks to tilt or cant them one way or another according to the location of i the points of contact between the bricks and the anchor plate edges.

To properly place the putlogs so that the anchor plate edges rested squarely on the brick required care, and a degree of accuracy difficult to attain and needless to say seldom arrived at, principally because its importance was not recognized by the workman erecting the scaffolding or staging.

It is an object of the resent invention to obviate the above faults and the accuracy heretofore required for the best results, and to that end the present putlog has been produced, which, by reason of its construction, ensures a correct contact of the anchor plate and the brick even though the putlog may not be set as it should be to obtain the best results when constructed like those previously used.

The invention consists in certain features of construction which will be fully understood fro n 1 a description of the drawings and the claims hereinafter given.

Of the drawings:

igure 1 represents in top plan view a portion of a brick wall in course of construction, showing a well known type of Hi) scaffolding in which the present invention is included.

Figure 2 is a perspective view showing the means for supporting the outer ends of the putlogs. on

Figure 3 is apart side elevation of a putlog shown in operative position.

igure i is an enlarged view of the inher end of the putlog shown in Figure 8.

Figure 5 is a view similar to Figure l showing the putlog as tilted upwardly and assuming an exaggerated position.

Like characters represent like parts throughout the several figures of the drawing.

Referring to the drawings:

The putlog shown herein is composed of a bar or log 10 of wood or other suitable material slotted at one end to receive a flat plate extension 11, hereinafter referred to as the anchor plate which is held fast to the bar 10 by the bolts or rivets 12 and 18, the latter also serving to secure the stirrup or strap 1 to the said bar.

The late 11 is provided with a downwardly extended hook 15 arranged to en gage the rear or inner face of a brick or building element 16 as seen in Figures 3, 4t and 5, and has a preferably circular protuberance 17 of short radius so located on the lower edge of the plate 11 that it contacts with the brick 16 at a point midway across the top thereof when the hook 15 is in engagement with the inner face of the brick.

Figures 3 and 1 show the correct position of the putlo-g relatively to the wall and brick upon which it rests, the point of contact between t-he'brick and the protuberance 17 being vertically coincident with the center of the brick and the center of the arc of the said protuberance whereby load is transmitted to the brick at the most advantageous point and the brick will not be forced to tilt one Way or the other.

It will be understood that it is common practice to place the putlogs on newly laid bricks, the binding material for which has not so firmly set but that the brick could be tilted if the load was not properly transmitted thereto, and in view of that fact it is an object of the present invention to so arrange the shape of the hook and its distance with respect to the protuberance 17 that the said hook will engage the inner face of the brick, and load will be transmitted to the brick at approximately the point shown in Aigure 4 even though the putlog' may be tilted as seen in Figure 5.

It will also be understood that the hook may be so shaped as to ensure the positioning of the protuberance to a nicety with respect to that point on the brick, but for the purpose of the invention it is not essential that great accuracy be attained but rather a close approximation thereof.

Having described the invention I claim:

1. A putlog having a thin metallic extension secured thereto and arranged to be inserted in a crevice formed between adjacent building elements, said extension having a downwardly projecting hook portion at the free end thereof, and a generally straight lower edge interrupted by a circular protuberance approximately midway of the length of said extension and arranged to contact with a given width building element at approximately midway of the width thereof, said protuberance having a height approximately one half that of said hook.

2. A putlog having a thin metallic anchor plate extending therefrom and arranged to be inserted in a crevice formed between adjacent building elements, said plate terminating in a downwardly projecting hook having a curved building element contact edge at the free end of said extension, and having a generally straight lower edge interrupted by a circular protuberance spaced from said hook a distance equal to approximately one half the length of said ext-ension and depending from said lower edge a distance equal to approximately one half the length of said hook.

A putlog having a thin metallic anchor plate extending therefrom and arranged to be inserted in a crevice formed between adjacent building elements and having a downwardly extending hook at the free end thereof and a generally straight lower edge interrupted by a buildingelement contact port-ion located approximately midway of the length of said extension so as to contact with a given width building element at a point approximately midway of its width.

4. A putlog having a thin metallic extension secured thereto and arrangedto be inserted in a crevice formed between adjacent building elements, said extension'hava downwardly projecting hook portion, at the free end thereof, and a generally straight lower edge interrupted by a circular protuberance arranged to contact with a building element and positioned from said hook portion a distance equal to one half the length of said extension, said protuberance having a height approximately one half that of said hook, said projecting hook portion having an inner edge curved in such manner as to contact with the inner edge of a building element when said protuberance contacts therewith, regardless of the tilt of said putlo Signed by me at Clearwater, Fla., this 20 day of February, 1925.

THOMAS H. KINGSTON 

